Delayed control time lock



Jan. 28, 1936. w. c. MILLER 2,029,272

' DELAYED CONTROL TIME LOCK Filed sept. 4, 1954 s sheets-sheet 2l Jan. 28, 1936. W` ct WLLER 2,029,272

DELAYED CONTROL TIME LOCK Filed Sept. 4, 1934 3 Sheets-Shree?I 5 Patented Jan. 28, 1936 PATENE @FFQE DELAYED CONTROL TIME LOCK William C. Miller, Canton, Ohio, assigner to Diebold Safe & Lock Co., Canton, Ohio, a corporation of Ohio Application September 4, 1934, Serial No. 742,667

14 Claims.

This invention relates particularly to delayed -control time-locks and means for preventing opening of a safe-door until a predetermined time has elapsed after the combination has been set for unlocking.

The invention is in the nature of an improvement upon the invention disclosed in the application of William C. Miller and Christopher W. Kuenzel, Serial Number 613,954, iiled May 27th, 1932.

The invention is well adapted for use in connection with a combination lock equipped with chronometric mechanism which is energized during the manipulation of the dial in setting the tumblers to permit retraction of the locking bolt, or locking bolts, of the safe.

In the preferred embodiment, clock mechanism is employed, and the clock spring is wound in manipulating the dial. Also, in the preferred arrangement, the clock begins to run immediately .after the winding operation is completed, and operates to withdraw, at the end of a predetermined period, an abutment, or dog, which serves to prevent the bolt-work from being withdrawn after the combination has been set for unlocking -until the predetermined period of delay has elapsed.

In the application referred to above, a mechanism is disclosed which is provided with a timing gear located in the rear of the casing, this gear being actuated through the medium of a gear train likewise located in the rear portion of the casing. In accordance with the present invention, the winding-gear which is actuated during the manipulation of the dial to effect the winding of the clock-spring is itself equipped with means for withdrawing the abutment (the auxiliary means for preventing the withdrawal oi the belt) This expedient very greatly simplifies and cheap- Vens the construction and renders the mechanism much more convenient.

The invention is illustrated in a preferred embodiment in the accompanying drawings, in which- Fig. 1 represents a broken sectional view of a door equipped with a combination lock having applied thereto the improved time-mechanism; Fig. 2, a view taken as indicated at line 2 of Fig. 1, Yshowing the front section of the casing and the combination iock-mechanism mounted therein;

Fg. 3, a view taken as indicated at line 3 of Fig. 1, showing the rear section of the casing and the clock mechanism mounted therein, it being noted that these casing-sections and the mechanisms mounted therein are complemental to each other,

(Cl. 'Y0-26) and it being further noted that Fig. 3 shows the 4 position of the parts after the winding operation has been completed and when the setting-up of the combination is just about complete, as illustrated in Fig. 2; Fig. 4, a broken horizontal sec- 1 tional view of the casing, exposing the mechanisms; 5, a broken front view of the clockmechanism showing the relation of the parts at about the time the Winding operation begins, it being noted that the pin which appears on the disk of the combination lock-mechanism fixed to the spindle, as shown in Fig. 2, is indicated by dotted lines in Fig. 5, engaging a slot in the disk which carries the winding-pawl; Fig. 6, a View similar to Fig. 5, but showing the position of the parts at the instant the winding-pawl is slipping past the stud on the winding-gear at the conclusion of the winding operation; Fig. 7, a similar view, showing the disk and pawl appearing in Fig. 6 removed and also showing the winding gear removed, but indicated in dotted lines, this view indicating the position of a ring-like lever which is to serve to lift the abutment which blocks the path of the pin (shown in dotted lines) which is carried by the bolt-actuating member, this pin appearing in full lines in Fig. 2, near the pivot of the bolt-actuating member; Fig. 8, a View similar to Fig. 7, showing the abutment in retracted, or raised position; Fig. 9, a view similar to Fig. 8 after the clock has .operated a suiiicient length of time to permit the abutment to drop to obstructing position; and Fig. 10, a sectional view taken as indicated at line i0 of Fig. 6, illustrating the manner in which the rwinding gear and attendant parts are mounted on the clock-frame. In the illustration given, A designates a door; B, a casing-section secured to the rear face of the door, as by means of screws l, said casing-section containing a combination lock-mechanism, including a spindle B which extends through the door and is equipped with an actuating knob B2 and a dial B3, the latter associated with a dialring B4 which is secured to the door in the usual manner, as by means of screws (not shown); C, a casing-section which is complemental to the casing-section B, and which is secured thereto by means of screws 2 which may extend through the casing-section C and into tapped openings with which the iront casing-section B is provided in the lugs 3, shown in Fig. 2; and C', clock-mechanism mounted in the rear casing-section C, this clock-mechanism being adapted to be wound in manipulating the combination lock-mechanism, and serving, in turn, to control the withdrawal of the bolt of the combination lock-mechanism.

The combination lock-mechanism is shown as comprising a main locking-bolt 4; a bolt-actuating member 5 connected with the bolt by a pivot 5a; a rear disk 6 xedly secured on the rear end of the spindle B; and tumbler-disks I mounted on the spindle in the usual manner. These parts are of the usual construction and arrangement. The member 5 is equipped with a forwardly projecting bar or pin 5b which is adapted to ride upon the tumbler-disks'and at the proper time enter the slots indicated at la. The member 5 is provided, also, with the usual lug 5 which is adapted lto drop into a recess 6a with which the disk E is provided, it being understood that the bolt Il, in this construction, is actuated through the medium of the member 5 when the spindle B' is turned to actuate the disk 6, assuming the lug 5c to be in engagement with the recess Ba.

The member 5 is shown equipped with a stud D whose path normally is obstructed by a with- Adr'awable abutment actuated by the clock-mechanism'; and the disk. 6, which is fixed to the spindle B',` is shown equipped with a pin E which is adapted to actuate the winding-gear of the clockmechanism during manipulation of the dial.

I Fig. 5, the position of the stud D and the position of the pin E are indicated by dotted lines. The clock-mechanism comprises a frame 8 which is secured in the casing-section C, as by means of screws Se;` a spring-housing 9 is suitably mounted on the frame, through which extends theusual main shaft 9a which has fixed on its front end a pinion 9b; I9, a winding gear which serves also as a 'carrier for an abutment-retract- `ing device, the gear I9 being connected through an idler pinion II with the pinion 9b; I2, an auxiliary locking-device, guard, or dog, which normally obstructs the path of the studD, the member vI2 having an arm I2a supported on a pivot -I2b (Fig. 7), carried by the frame 8, and the member I2 being equipped with a cam arm 12C; I3, (see Figs. 5-10) a short journal-member upon which the winding-gear I9 in journaled, this member carried by the frame 8; I4, a ringlikecam-lever journaled on the head-portion of the member I3 and equipped with an actuating arm Illa and a cam-lug I db adapted to actuate 'the arm I 2e; i5, a pawl-carrying disk eccentrically mounted (with reference to the winding gear I0) on a pivot-screw I5a which serves also to secure the journal I3 to the frame-member 8; and I6, a winding-pawl carried by the disk I5, said pawl being connected by a pivot-screw Ia to the disk vI5 and equipped with a spring Ib.

y'I-he disk I5 is equipped with a stud I5b which limits the movement'of the pawl i6 in one di rection.

The winding gear I0 is provided with aforwardly projecting stud llia which is engaged by the outer end of the pawl I9 during the winding operation. Because of the eccentric journaling of the disk I5 with relation to the winding-gear, the pawl I6, at the end of the winding stroke, slips past the stud i921. The operation will be understood by-referring to Figs. 5 and 6, the position in Fig. 6 corresponding with the instant that the pawl I 5 is to spring past'the stud Ia. A moment later, the spring IGb will have moved the butt end of the pawl away from the stud I5b (compare Fig. 3).

The winding gear II) is provided with a rearwardly projecting stud Ib (Fig. 7) which, during the winding operation, returns the ring-form lever Illto the operative position; also, the winding gear is provided with a series of tapped eration. 'mechanism the gear I 8 serves through the meperforations indicated at |00. Any one of these perforations may receive a stud or screw Id which serves to actuate the lever I4 during the working stroke thereof. The stud Id may be set to time the withdrawal of the auxiliary lockingdevice I2, as desired. In the illustration given, the stud I9d may be set to time the release to a period of 10 minutes up to 30 minutes, the spacing of the perforations corresponding with the 5iminute period.

In Fig. 8, the abutment I 2 has been lifted to a point which clears the path of the stud D on the member 5 of the combination lock-mechanism. During the lifting of the member I2, the cam-tooth lb works on a surface I2d of the cam arm of the member I2. For a short period, say 2 or 3 minutes thereafter, the arm is held out of the path of the stud D. During this short period,` the combination lock may be manipulated to withdraw the bolt fl. Finally, the tooth I 4b passes the 'cam arm and permits the auxiliary locking-device I 2 to drop again (see Fig. 9) into the path ofthe stud D, so that if the boltv 4 has not been retracted in the meantime,.it cannot be retracted without rst operatingthe delayed time-control again.

Referring to Fig. 10, it will be noted that the frame S is equipped with a forwardly projecting dowel-pin VII which enters a perforation'with which the journal-member I3 is provided. .Also, itwill be noted that the head-portion of the journal I9 serves to space the winding gear Ii) fromthe frame, and the ring-form lever I4- is located in the intervening space.

yThe clock-work is, in the main, of the usual construction. The pinion 9b is mounted. on the lforward end of the shaft 9a which extends through the Amain spring casing 9. As is well understood, vone end of the spring (not shown) is secured tothe shaft 9a and the other end is secured to the casing 9. At the rear end, the shaft 9a is equipped with a gear I8 which turns idlyfunder a pawl I9 during the winding op- Later, in the operation of the clockdium of a pawl 29 to actuate a freely journaled gear ZI which drives a gear train 22 controlled by balance wheels or escapements 23. Any suitable escapement may be employed. In the illustration given, two escapements are employed, these escapements being connected through a differential gear device 24. The doubleescapement device just referred to is described and claimedin the application of William C. Miller and Paul M.'Hawkins, Serial Number 688,692, filed September 8, 1933.

'Ihe operation may be described briefly:

In the dialing operation for placing the combination lock mechanism in condition to unlock the bolt li, the winding gear train IU, II, and 9b is actuated in one direction to effect winding of the clock-spring. Thus, the stud E on the disk 6 which is xed to the rear end of they f spindle B' engages a slot 25 in the windingdiskr I5. When the knob B2 is turned clockwise, the disk 6 turns in the same direction (but counter-clockwise as viewed in Fig. 2). Thus, the winding-disk I5 is turned clockwise, as viewedV in Fig. 5, and the winding-gear is turned by the pawl I6 engaging the cam stud II)a until, by reason of the eccentric mounting of the member I5, the pawl slips past the stud Illa. Subsequent manipulations of the dial will not affect the clock-mechanism, inasmuch as the full Winding is effected during one right turn of the knob Bz.

52,029,272 'Upon winding, the clock immediately beginsito run, the winding gear I being turned counterclockwise. The lever I2 is not actuated until the stud Id carried by the winding gear comes into engagement with the arm HIa (Fig. 7). When this occurs (Fig. 8) lever I4 is turned to eiect retraction of the abutment I2, thus freeing the stud D, so that the bolt 4 may be retracted. While the lever III is turning from the position shown in Fig. 8 to the position shown in Fig. 9, the bolt 4 may be retracted at any time before the abutment I2 drops again to the obstructing position. The clock continues to operate until the arm Ida engages a stop-stud 26 with which the frame 8 is equipped. In the next -winding operation, the stud Illb on the winding rgear returns the lever I4 to the operating position shown in Fig. 7, it being noted that the cam arm I2`c is so formed as to permit the tooth Mb to pass the cam arm.

If it be desired to vary the period of delay, the screw Id may be adjusted to a new position on the winding-gear I 0. The casing-sections may be readily separated to enable such adjustment to be made, it being necessary only to remove the two screws indicated by the numeral 2. It is noted that the front casing-section B has the guide for the bolt 4 recessed as indicated at 21 (Fig. 2); and the casing-section C (Fig. 3) is provided with a tongue 28 which ts into the recess 21.

From the description given, it will be evident that the mechanism has been improved and simplied by making use of the expedient of utilizing the winding-gear train as a means for eiecting, in the reverse movement, withdrawal of the auxiliary locking device I2. In the winding operation the member I0 is actuated clockwise, as indicated by the arrow in Fig. 5. When the member III is actuated by the clock-spring, however, its movement is counter-clockwise, and during this reverse movement the auxiliary locking-device is retracted. In the construction illustrated, the winding gear-train is located at the front side of the frame of the clock-mechanism and is immediately accessible upon removing the casing-section C from the casing-section B. Thus, the means for actuating the abutment I2 is located at the front side of the rear casing-section.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in View of the prior art.

What I regard as new and desire to secure by Letters Patent is:

1. Locking mechanism comprising a closurelocking bolt; main locking means comprising a combination lock controlling actuation of said bolt and equipped with tumblers adapted to be brought to position to permit the unlocking operation by manipulation of the dial; auxiliary means for preventing withdrawal of the bolt; clock mechanism adapted to effect release of said auxiliary means after a predetermined period, said mechanism including a. winding gear; a member movably associated with said gear adapted to effect the release of said auxiliary means; means mounted on said gear for actuating said lastmentioned member; and means interposed between the combination lock and said gear adapted to turn said gear in a direction to wind the clock-spring in the manipulation of the dial.

2. Locking-mechanism as specied in claim 1, in which the means for actuating said gear to wind the clock-spring comprises a disk pivotally related to said gear, a winding-pawl carried by said disk, a stud carried by said gear adapted to be actuated by said pawl, and means carried by the combination lock for actuating said disk.

3. In combination: a combination lock including a closure-locking bolt; clock-mechanism equipped with an auxiliary locking-device for preventing retraction of said bolt; a Windinggear journaled on the frame of the clock-mechanism and equipped with a winding disk carrying a winding-pawl; a stud on said gear adapted to be actuated by said pawl in the winding operation; and means carried by the combination lockmechanism serving to actuate said winding disk during the manipulation of the dial to bring the combination to the unlocking position.

4. In combination: a combination lock provided with aclosure-locking bolt; clock-mechanism; a winding gear-train serving to wind the spring of said clock-mechanism and then to be actuated in a reverse direction by said spring; a winding-disk journaled eccentrically on one of the gears of said train and equipped with a winding pawl which coacts with a stud carried by such gear during a portion of the rotation of said winding-disk; an auxiliary locking-device for preventing retraction of said bolt; and means carried by said combination lock serving to actuate said winding disk when the dial is manipulated to bring the combination lock tumblers to the unlocking position.

5. A structure as specified in claim 4, in whic the winding-gear train is interposed between the combination lock and the frame of the clockmechanism.

6. A structure as specified in claim 4, in which the winding gear train and the auxiliary lockingdevice are mounted at the front face of the frame which carries the clock-mechanism.

'7. In combination: a combination lock provided with a closure-locking bolt; clock-mechanism mounted back of said combination lock; a device actuated by the combination lock in the manipulation of the dial thereof to bring the parts to the unlocking position; winding mechanism mounted at the front side of the frame of said clock-mechanism adapted to be actuated by said device to effect winding; and an auxiliary locking-device pivotally mounted on the front portion of the clock frame adjacent said winding mechanism and actuated thereby in a reverse movement of the winding mechanism, said auxiliary locking-device serving to obstruct retraction of said locking bolt until retracted through the medium of said winding mechanism.

8. In combination: a combination lock, including a closure-locking bolt; clock mechanism mounted back of said combination lock; a winding-member actuated by said combination lock in the dialing operation; an auxiliary lockingdevice adapted to prevent retraction of said locking bolt; and Va winding gear-train, which includes a gear journaled on the frame of the clock-mechanism, a winding disk eccentrically journaled with relation to said gear, a pawl pivotally mounted on said winding disk coacting with a stud carried by said gear to eiect winding, a cam-lever pivotally related to said gear and serving to effect retraction of said auxiliary locking device when the winding mechanism is driven in a reverse direction by the clock-spring,

and a timing-.stud carried by said gear adapted .to actuate-.said cam-lever. t 9.11Iny combination: lockingfmechanism Vcomprising a closure-locking bolt; main locking means controlling the movement of said b olt; .auxiliary means vfor preventing withdrawal yof the b olt; ftime'mechanism YadaptedA-to eiect retraetionof said auxiliary vmeansfand' ateran interi/,al to permit the auxiliary means Yto ret-urn .to boltfobstructing position; and means actuated -in-,the `operation of said main vlocking-means serving to energize said time-mechanism.

10, .Locking mechanism comprising: a closurelocking belt; main locking means'comprising a combination lock controlling actuation of said -bolt and equipped with tumblers adapted to be brought to'position to permit the unlocking operation by manipulation of the dial; auxiliary means for preventing Withdrawal of the bolt; time mechanism adapted to effect release of said auxiliary rmeans after a predetermined period and after a-further period to permit said auxiliary means to return to the bolt-obstructing position; and lmeans actuated by the combination lock in `theoperation of dialing and -manipulating the tumblers for energizingsaid time mechanism.

1'1."In mechanism of the character set forth: aziframe; a clock mounted therein; a journal secured tothe frame; a Winding gear on said journal; a cam-lever mounted on said journal;

means'earried'by said gear for actuating said cam-lever; and a Winding-disk eccentrically journaled with respect to said first-mentioned journal and equipped. with a winding pawl coacting Vwith la -stud carried by said gear.

V12. In a device of the character set forth: a

.closure-locking bolt; an auxiliary locking-member for obstructing movement of said ,boltequipped with a cam arm; a journaled cam lever coacting with said cam arm; a gear equipped with studs for actuatingsaid cam-lever in both directions; and a Winding-disk eccentrically journaled with relation to said gear and equipped With a .winding pawlrcoacting with a stud carried by .said gear.

13. In combination: a combination lock, including a closure-locking bolt, said combinationlockcarrying a Winding member; an auxiliary locking-device for preventing retraction of said bolt; `time mechanism having means for retracting said auxiliary locking device and after a short ing position, said time mechanism being equipped with means actuated by the Winding- `member of the combination lock serving to interval permitting it to return to bolt-obstruct- 

